Few brands are as synonymous with outdoor sports as Garmin. You’ll find these fitness trackers and smartwatches on dozens of wrists at any 5K, marathon, or Ironman. You’ll also find Garmin devotees among divers, thru-hikers, golfers, kiteboarders — you name it. But these devices aren’t just for athletes. The company’s made significant strides in its lifestyle offerings, so regardless of your fitness level, there’s a Garmin for everyone.
Technology
The best Garmin watches for training and everyday life
If you’re coming from a more traditional smartwatch, Garmin’s core strengths lie in fitness, GPS, adventuring, and durability. These are hardy devices that are meant to withstand the elements and last weeks on a single charge. Several models come with offline maps, advanced navigational features, and more training metrics than any other platform. And although many wearable companies have begun rolling out subscriptions, Garmin has publicly stated it has no intention of charging its users extra. That’s a good thing since Garmin devices tend to be on the pricier side.
Garmins aren’t too shabby on smarts, either. While more fitness-focused than anything from Apple, Google, or Samsung, there’s enough to get you the basics like notifications and then some. For example, most Garmins have fall detection and safety features, and several of the latest Garmins recently got an FDA-cleared EKG feature. (You’ll need a phone on hand, however, as only one Garmin model has cellular connectivity.) Many Garmin devices also support offline music playback and come with a small third-party app ecosystem.
There are a lot of Garmin watches to choose from. No, seriously, there are six major lineups, and each has a multitude of models. But no worries — I test several Garmins every year and can help point you in the right direction.
The best Garmin for runners
Garmin’s midrange Forerunner watch adds a new OLED display, a week’s worth of battery life, and dual-frequency GPS for better accuracy.
Sizes: 42mm w/ 18mm straps; 46mm w/ 22mm straps / Weight: 39g (42mm); 47g (46mm) / Battery life: Up to 15 days (42mm); 13 days (46mm) in smartwatch mode / Display type: OLED touchscreen / GPS: All-systems GNSS and dual-frequency GPS / Connectivity: Bluetooth, Ant Plus, Wi-Fi / Water resistance: 5ATM / Music storage: 8GB
Garmin has many running watches, and a lot of them are great. But the Forerunner 265 or 265S (if you have petite wrists) strikes an excellent balance between price, feature set, battery life, and a vibrant OLED display.
That said, the Forerunner 265 / 265S is a bit of an odd duck. It comes a mere nine months after its predecessor, the Forerunner 255, and is, in many ways, pretty much the same watch. The main difference is the 265 has an OLED display compared to the 255’s memory-in-pixel screen. Usually, that means worse battery life, but in this case, we got about a week on a single charge with the always-on display enabled. Without it, you can get up to 15 days. Given that OLED is easier to read and just, well, looks nicer, that gives the 265 lineup an edge over the 255.
The 265 also has dual-frequency GPS (also known as multi-band). The gist is you get much more accurate maps in challenging environments like cities and dense forests because you can access both the L1 and L5 satellite frequencies. And even with dual-frequency GPS enabled, you still don’t lose a whole lot of battery life. I wore it during a half marathon with that and the AOD enabled, and I still had over 80 percent battery by the time I got home. This is also an excellent price, as the majority of multi-band GPS watches cost well over $600.
My main complaint is that $450, while not bad for Garmin, is still a lot when you consider that’s the same price as smarter smartwatches with great running features. Some runners won’t care. But if you’re on a budget — or you’re new to running and feel iffy about spending that much — then consider the Forerunner 165 series. It starts at $250 (add another $50 for onboard music) and does almost everything the 265 series does. The main things you’re missing are dual-frequency GPS and a few more niche sport profiles. But if you’re mostly sticking to running, gym equipment, cycling, swimming, and hiking, you’re covered.
The Garmin Forerunner 165 Music gets you in-depth training metrics but leaves out some of the more advanced features in exchange for a more palatable price.
Neither has all of Garmin’s training features, but it’s got what you’ll need to run anything from a 5K to a full marathon. That includes a Race Predictor, which gives you an estimate of what your best time would be based on your actual training. You can also use PacePro to figure out your pacing strategy for a race. You also get Garmin’s Training Readiness feature to help gauge load and recovery, Garmin Coach plans, and a host of running form metrics. It also supports offline music and safety features like fall detection. The only thing they lack is advanced mapping. (They still have trackback, point-to-point navigation, and real-time breadcrumb trail support, however.)
Read my full Garmin Forerunner 265S review.
The best Garmin for endurance sports
$1000
The Garmin Epix Pro comes in three sizes, includes a handy flashlight, and has multiband GPS. Plus, it lasts over a week on a single charge.
Sizes: 42mm w/ 20mm straps; 47mm w/ 22mm straps; 51mm w/ 26mm straps / Weight: 42mm: 63g stainless steel, 58g titanium; 47mm: 78g stainless steel, 70g titanium; 51mm: 98g stainless steel, 88g titanium / Battery life: 42mm: up to 10 days (4 with AOD); 47mm: up to 16 days (6 with AOD); 51mm: up to 31 days (11 with AOD) / Display type: OLED / GPS: All-systems GNSS and dual-frequency GPS / Connectivity: Bluetooth, Ant Plus, Wi-Fi / Water resistance: 10ATM / Music storage: Up to 32GB
The Epix Pro will get you every fitness feature that Garmin has to offer. And I mean everything. It would frankly be easier to tell you what the Epix Pro does not have: things that are limited to LTE smartwatches and some of the new smart features on the Fenix 8, like an on-board voice assistant. Otherwise, you’ve got topographical maps, turn-by-turn navigation, and more training metrics than even a seasoned triathlete would know what to do with.
The Pro is more size-inclusive than the standard second-gen Epix, which only comes in 47mm. You can get the Pro in that size, too, but it also comes in 42mm and 51mm. This was a major complaint I had with the second-gen Epix last year, and you love to see companies actually take this sort of thing seriously. The best part is the Pro models start at the same price as the regular Epix did. You’ll have to pay $100 extra for materials like titanium and sapphire crystal, but that’s also true of the standard Epix.
$1000
The Garmin Fenix 8 adds smart features like the ability to take calls on the wrist, and an on-board voice assistant.
That said, it muddies the waters if you’re trying to pick between the Epix Pro, Fenix 7, Fenix 7 Pro, and now, the Fenix 8. The main difference is the Epix watches all have OLED displays. One reason I prefer OLED is that they’re much easier to read indoors — where most of us spend the majority of our time. The Fenix 7 series’ memory-in-pixel displays (plus solar charging if you opt for it) allow for weeks and weeks of charge, but the smallest Epix Pro can get around 10 days with normal usage. The 47mm and 51mm Pro models can go longer between charges due to bigger batteries, but I felt that the 42mm has enough juice to satisfy most use cases. Garmin also has so many battery-saving modes and options that I highly doubt this will ever be an issue.
Not helping matters is the fact that the Fenix 8 lets you choose between an OLED or a MIP display. You also get smart features like an onboard voice assistant, the ability to take calls from the wrist, and the Garmin Messenger app. The main problem is the starting price is now $350 more than the standard Fenix 7 and right about on par with the Epix Pro. My personal feeling is the Fenix 8’s smart features are just okay and that you’re really not missing much by not having them. This is also the season where we see discounts on older models, so I would put on my bargain hunting hat for a discounted Epix Pro or Fenix 7 Pro while inventory still lasts.
But really the winning feature of the Epix Pro is the hands-free flashlight. It’s so useful in my day-to-day life, and all you have to do is double-press a button. It’s as bright as your smartphone, comes with a red light option if you want something easier on the eyes, and can act as a strobe in an emergency situation. The Fenix 7 Pro and 8 watches also have a flashlight, so a lot of this is going to come down to personal preference for the display, price, and whether you care about smart features.
$800
Like the Garmin Epix Pro, the Fenix 7 Pro line has an updated optical heart rate sensor for improved accuracy. It also has excellent battery life, a slightly brighter MIP display, solar charging, and the option of upgrading to sapphire crystal.
If you’re set on the most battery life possible, I recommend the Fenix 7 Pro over the standard 7 for a few reasons. Its MIP display is slightly brighter, all sizes have the flashlight, and, like the Epix Pro, it has an updated sensor array. I also recommend it over the MIP versions of the Fenix 8 because it comes in more sizes, and costs around $300 less. Especially since the Fenix 8’s smart features are a bit half-baked.
Read my full Epix Pro review.
The best Garmin on a budget
Garmin’s entry-level hybrid smartwatch looks like a Swatch at first glance. However, it sports a hidden OLED display that delivers notifications without sacrificing fitness tracking.
Sizes: 40mm w/ 20mm straps / Weight: 19g / Battery life: Up to 5 days / Display type: “Hidden” OLED touchscreen / GPS: Tethered GPS / Connectivity: Bluetooth, Ant Plus / Water resistance: 5ATM / Music storage: N/A
What I love most about the Vivomove Sport is it doesn’t look like what most people expect from a Garmin. It’s a hybrid smartwatch, which means it looks like a regular watch but can track fitness and deliver notifications. Garmin’s hybrids are also unique in that they all use an OLED display that stays hidden until you need it.
This is best suited for a casually active person who wants style and value in a lightweight package. Think wellness, more so than fitness. It gets you continuous heart rate monitoring and blood oxygen level monitoring and can even provide abnormal heart rate alerts. You also get access to more in-depth metrics like respiration rate, fitness age, stress, and Body Battery, which is Garmin’s tool for visualizing how well-rested you are. For smart features, you get all the basics, like notifications, alarms, and timers.
The Sport isn’t quite as full-featured as some other Garmins you’ll find on this list. For instance, you’re giving up built-in GPS in favor of tethered GPS through your phone. There are no contactless payments, nor is there a microphone or speaker for taking calls on the wrist. But this is a budget pick, and you get a lot, considering this is an entry-level gadget that could pass for a Swatch at a glance.
I don’t love that the battery life is short for a hybrid, at around three to four days. Even so, that’s still much better than what you’ll get on an Apple Watch or Wear OS 3 watch. If you’re willing to spend about $100 more, the $269.99 Vivomove Trend has more chic materials, gets you more screen real estate, and wireless Qi charging. Otherwise, this is a great lifestyle wearable that can serve as a classier alternative to your typical fitness band.
$250
The Garmin Lily 2 is a simple yet chic hybrid analog smartwatch that delivers basic fitness tracking, notifications, and up to five days of battery life.
If you prefer something newer to the Sport that’s also stylish, the Garmin Lily 2 is another good option, especially if you’ve got particularly small wrists or prefer something extremely lightweight. The swipe and tap gestures are still a little fiddly to use — which was also the case with the first-gen model — but the fresh design is a fun way to lightly monitor your fitness without bogging yourself down with notifications. Garmin also recently announced a new version called the Lily 2 Active, which adds a physical button, GPS, and support for more sports tracking for a starting price of $299.99.
Read my full Garmin Vivomove Sport review.
The best Garmin to replace a Fitbit
The Garmin Venu Sq 2 is a great replacement for a Fitbit smartwatch. Not only do they look similar, but the Venu Sq 2 has way more fitness features, long battery life, and no subscription.
Sizes: 40mm w/ 20mm straps / Weight: 38g / Battery life: Up to 11 days / Display type: OLED touchscreen / GPS: All-systems GNSS / Connectivity: Bluetooth, Ant Plus / Water resistance: 5ATM / Music storage: 4GB (for Music Edition)
If you were disappointed by the Fitbit Sense 2 and Versa 4, the Venu Sq 2 is the next best thing (and, in some ways, better).
At a glance, the Venu Sq 2 could easily be mistaken for an Apple Watch. On the wrist, you’ll notice it’s made of plastic, but it still looks quite chic and extremely lightweight. The screen is bright, easy to read, and looks better than any Versa or Sense ever did.
The feature set is also great for the price, with built-in GPS, a ton of watch faces, emergency safety features, and contactless payments. If you pay $50 more for the Music Edition, you’ll also get about 500 songs worth of storage, but we wouldn’t recommend it. This doesn’t have cellular connectivity and, therefore, isn’t truly standalone. You’ll most likely be carrying your phone with you anyway.
As for health features, the Venu Sq 2 basically has everything you’d get on a Versa or Sense smartwatch but with Garmin’s treasure trove of metrics as well. That includes heart rate tracking, blood oxygen tracking, intensity minutes (how much moderate exercise you get in a week), stress tracking, hydration tracking, respiratory rate, period tracking, and Garmin’s recovery feature, Body Battery. As far as fitness goes, you also get access to Garmin Coach, which provides free 5K, 10K, and half marathon training plans. You love to see it.
Another big leg-up Garmin has over Fitbit? None of these features or metrics are locked behind a paywall.
Read my full Garmin Venu Sq 2 review.
The best Garmin smartwatch
The Garmin Venu 3S adds a new heart rate sensor, a wheelchair mode, and much-improved sleep tracking and nap detection.
Sizes: 41mm w/ 18mm straps; 45mm w/ 22mm straps / Weight: 40g for the 3S; 47g for the 3 / Battery life: Up to 10 days for 3S; 14 days for 3 / Display type: OLED touchscreen / GPS: GPS, GLONASS, GALILEO / Connectivity: Bluetooth, Ant Plus, Wi-Fi / Water resistance: 5ATM / Music storage: 8GB
Garmin has shored up the smarts in its watches over the past few years, and the Venu 3 series is the smartest (and most affordable) of the bunch.
The Venu 3 series comes in two sizes: 41mm and 45mm. Like the Venu 2 Plus, it has a microphone and speaker. You can take calls directly from the wrist as well as issue commands to your phone’s digital assistant via Bluetooth. It’s not the same as having Siri, Bixby, Amazon Alexa, or Google Assistant built directly into the watch, but it’s a clever workaround that works well for hands-free control. It also supports safety features like fall detection and live tracking as well as contactless payments.
Like other OLED Garmins, the display is both vibrant and easy to read. As for health and fitness, you get a nice mix of basic and more advanced features and metrics. It has Garmin’s latest heart rate sensor, which enables FDA-cleared EKG and AFib detection features. Overall, it leans a bit more on the wellness and health side of things, with intensity minutes, blood oxygen monitoring, sleep tracking, period tracking, abnormal heart rate alerts, and stress tracking. As for training, you still get built-in GPS, VO2 Max, heart rate zones, respiration rate, and downloadable training plans via Garmin Coach.
New to the 3 and 3S is a sleep coach that factors in metrics like heart rate variability and recent activity to determine your sleep needs. It also finally adds nap detection, a feature that’s been long overdue for the Garmin platform. The Venu 3 series also adds audio-guided meditation sessions, and you can view how these sessions directly impact your metrics. From an accessibility standpoint, this also adds a new wheelchair mode.
Technically, the new Fenix 8 is slightly smarter in that it adds an on-board voice assistant. However, it is also more than double the price and not what I’d consider a good value for the average athlete. It’s more for people who spend hours upon hours training every week.
This is the Garmin for you if you want the platform’s in-depth training without sacrificing the productivity of a smartwatch. The main things it’s lacking are cellular options and a robust third-party app ecosystem. That said, it’s got Spotify, Amazon Music, and Deezer for offline listening. It’s also a good option if you’re fed up with MIP displays and want a smarter Garmin rather than a full-on smartwatch.
Read my full review of the Garmin Venu 3S.
Update, October 18th: Adjusted pricing and availability.
Technology
I spent a week using the Trump phone — it sucks
The Trump phone was never a serious phone. Not when it was announced last June, in dodgy renders and with an incoherent spec sheet. Nor when Trump Mobile admitted — just two weeks later — that it wouldn’t be made in the US. Not even when the company revealed the final phone, first to me over a video call in February and then to the world in April through a short commercial with the slick sheen of AI.
It’s now on sale for $499, past the days of its tenuous, ever-shifting release dates. A few buyers even have the phone, The Verge among them, though more still seem not to.
It’s clear now that the T1 is a real phone, but that doesn’t mean it’s a serious one. Still, for the next thousand words or so, I will try to take it seriously.

$499
The Good
- It actually exists
- 3.5mm headphone jack
- MicroSD card slot
- It basically runs stock Android
A serious phone wouldn’t look like this
The T1 Phone is a curved slab of cheap gold plastic, the smartphone equivalent of a pair of knockoff wraparound Oakleys. The gold finish — more yellow in certain light, though it certainly does shine and shimmer — is tacky in every sense, with a sticky friction that makes it feel distinctly unpleasant to the touch. My phone arrived with a tiny scratch in the top-right corner.
The phone is fairly thin, and light, but its excessively curved waterfall display feels immediately dated. It also loses one of the chief advantages of that design — better in-hand feel — thanks to the oddly angular frame, which juts into my palm as I hold it.
Almost every detail speaks to bad design. There’s the American flag logo, missing a stripe. The fact that “Trump Mobile” appears on the back twice, in two different orientations and two different fonts. Or the camera module, where the three lenses are spaced at irregular intervals.




There are things to like. The 3.5mm headphone jack will have its fans, as will the microSD card slot inside the phone, or the fact that the phone ships with a case, charger, and braided USB cable. These are things that a certain type of Android fan has lamented the absence of for years.
I, for one, am more excited to be reviewing a phone with a notification light again, a true treat that I thought we’d lost forever. It’s a glimpse of a better world, one I didn’t expect from Trump Mobile of all companies. But like the curved screen, even these welcome touches betray that this is a dated, old-fashioned phone, one based on an old HTC design that already felt like a throwback two years ago.
A serious phone would work outside the US
I live in the UK, meaning I may well have the only Trump phone outside of North America. It cannot maintain any signal stronger than 2G, meaning I can use it for texts and calls but not for data. As best as I can tell from digging through the T1’s FCC certification documents, the phone simply doesn’t support the network bands commonly used in Europe.
The T1 Phone isn’t sold in Europe, and that misshapen flag makes its target market clear. But even Americans get to go on vacation every once in a while. From my experience, it seems unlikely that the T1 would work anywhere in Europe and perhaps not anywhere in the world outside North America.
A serious phone would use more than the minimum hardware
At first glance, the T1’s spec sheet might seem impressive enough: a 120Hz OLED screen, a 5,000mAh battery, a triple rear camera with 50-megapixel sensors.
But the truth is you could find similar specs on almost any $200 Android phone and superior ones on phones sold at this price. Hardware like this is cheap and commodified, something that’s only beginning to change thanks to the ongoing memory crisis. Here, amusingly, the T1 is generously specced: 512GB of storage and 12GB of RAM come as standard. Those, along with the inclusion of wireless charging, are the only things that really stand out on this spec sheet.

Despite all that RAM, and Qualcomm’s modestly capable Snapdragon 7 Gen 3 chipset, the T1 is often sluggish. It sometimes stutters when switching apps or triggering animations, making even basic apps like Duolingo frustrating to use. This hardware isn’t flagship, but it should certainly be more capable than this. I can only assume Trump Mobile didn’t develop the sort of software and firmware performance optimizations that other manufacturers do, handicapping the phone from the start.
1/16
I suspect the camera’s limitations are for similar reasons. The three rear lenses and single selfie camera take basic, functional photos, at least in good light — with the exception of the 8-megapixel ultrawide, which is uniformly poor.
Other phone manufacturers spend millions optimizing their image pipelines, and none of that work is evident here. Daylight photos are vivid and oversaturated, nighttime shots are noisy, and the telephoto shows no signs of electronic stabilization at all, making it feel shaky and unstable. Incredibly, by default every shot is overlaid with a strangely small T1 watermark — as if anyone should want to take credit for these photos.
1/12
A serious phone would have made more effort in its software
As the Trump phone lurched haltingly toward its launch, the going assumption from many was that it would be a bloated mess, loaded with spyware, crypto apps, and MAGA-themed experiences, putting the president’s leering face front and center.
The truth is rather more mundane. It runs Android — the nearly two-year-old Android 15, to be precise — with almost no modifications at all. This is, in fact, about as close to what the nerds call “stock” Android as you’re ever likely to get these days.
The only preinstalled apps that are out of the ordinary are Truth Social, Trump’s own social media network, and Doctegrity, a telehealth platform that’s included with Trump Mobile’s $47.45 cell service. Beyond that you get a single Trump Mobile wallpaper and those photo watermarks, and that really is that.
In a sense, that’s a good thing — I’m hardly lamenting the lack of bloatware. But there’s also no sign that Trump Mobile has the ability or the intent to optimize its phone’s software or deliver any features beyond the minimum.

More worryingly, Trump Mobile hasn’t announced how long it will support the phone with software updates. When I spoke to executives from the company in February, they seemed confused by my question about how many Android version updates the phone would receive, though they did insist that customers won’t “be locked into what’s there today.” For now, that means a 2024 version of Android with a February 2026 security patch; I wouldn’t hold my breath for either to be updated any time soon.
A serious company would put more effort in
In a strange way, the T1 Phone isn’t all that terrible, but only because it proves how hard it actually is to make a truly terrible phone these days. It’s easy enough to throw together the baseline hardware, stick Android on top, and call it a day. For better or worse, that’s more or less exactly what Trump Mobile has done. Between the simple software and the dated hardware features, the T1 is an oddly compelling phone for some old-school Android fans, but Trump Mobile got there entirely by mistake.

This isn’t a serious phone. It’s a marketing stunt that got out of hand, a way to grab attention and juice the subscriber count for an overpriced cell service with the president’s name on it.
Trump Mobile doesn’t care about this phone. And after the year of reporting on it that’s led to this review, I’m thrilled to finally say: Neither should you.
Technology
Microsoft’s carbon emissions went up 25 percent last year
Microsoft may once again be struggling to keep up with its own climate goals, according to its 2026 sustainability report. As reported by GeekWire, the report states that Microsoft’s carbon emissions increased 25 percent in 2025, totalling 34 million metric tons “without select interventions.” Microsoft says this was “driven primarily by the expansion of our datacenter infrastructure,” as well as the company’s decision last February to stop purchasing “non-additional, unbundled renewable energy certificates.”
Several years ago, Microsoft set itself a goal to be carbon negative by 2030, meaning it will need to remove more carbon emissions than it produces. This isn’t the first time Microsoft has faced setbacks toward accomplishing that goal, as its 2024 sustainability report showed a similar rise in climate pollution. This year’s report admits that, “While AI infrastructure is driving demand for energy, water, land, and materials, sustainability solutions are not scaling fast enough to meet demand.”
Technology
Google turns old phones into cloud servers
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That old phone sitting in your drawer may have more life left in it than you think. You may look at it and see a dead battery, an outdated camera or a screen that no longer feels worth using. Google and researchers at the University of California San Diego see something else: a tiny computer that may still have useful processing power.
Their idea is called phone cluster computing. Instead of treating retired smartphones as electronic waste, researchers remove the motherboard and redeploy it as part of a low-carbon computing system.
Google says UC San Diego plans to launch a data center built from 2,000 Pixel smartphones in fall 2026. The goal is to provide low-cost cloud computing for students and researchers while reducing the need for newly manufactured server hardware.
That means the next chapter for an old phone may not be a junk drawer. It may be a server rack.
YOU COULD GET PAID FROM GOOGLE’S ANDROID DATA LAWSUIT
Researchers plan to launch a 2,000-phone data center at UC San Diego in fall 2026 to support students and research workloads. (Kurt “CyberGuy” Knutsson)
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What is phone cluster computing?
Phone cluster computing takes retired smartphones and turns their core hardware into a computing platform. The process starts by stripping each phone down to the motherboard. That board holds the processor, memory and storage. The display, battery, cameras, chassis and other phone-specific parts are removed.
That step is important because a full phone does not belong in a data center. Batteries can create safety issues. Screens and cameras waste space. The motherboard is the part that still offers computing value.
Once the board is removed, researchers load a general-purpose Linux system onto it. Android already runs on Linux at its core, but Android is built for mobile apps and personal devices. A data center needs something more flexible for cloud workloads. After that, the phone boards can be grouped into clusters. Many small boards then work together like a collection of tiny servers.
Why Google wants old Pixel phones for cloud computing
The AI boom has created a huge appetite for computing power. Data centers need more chips, more electricity and more cooling. At the same time, billions of phones fall out of use around the world.
This Google-backed project takes that conversation in a different direction by asking whether some useful computing can come from hardware we already made.
The project focuses on embodied carbon. That means the emissions created before a device ever turns on. Mining, manufacturing and shipping all add to that carbon footprint.
If a phone motherboard already exists, reusing it can avoid some of the environmental cost tied to manufacturing new hardware. Google says the motherboard accounts for about half of a phone’s embodied carbon, which makes it the most valuable part to recover.
How retired smartphones become low-carbon servers
You cannot plug a pile of old phones into a rack and call it a data center. The process requires careful teardown, new software and a way to manage many boards at once. Google says the project uses containerized applications managed by Kubernetes. That helps coordinate the work across many devices.
The phones are organized into self-managing clusters of about 25 to 50 boards. Each board works as a small Linux machine. Together, they can handle tasks that would otherwise run on traditional cloud servers. That does not make one phone equal to one server. A server has many more processor cores, more memory and data center-grade hardware. A phone board has fewer resources and tighter limits. Still, some jobs do not need a giant machine. They need enough compute to run efficiently without wasting resources.
GOOGLE ENGINEER STOLE AI SECRETS FOR CHINA, SENATE HEARS IN EXPLOSIVE TESTIMONY
Google and UC San Diego are testing a cloud computing system built from retired Pixel phone motherboards, giving old smartphones a possible second life. (Google)
Can old phone processors handle cloud workloads?
The technical case is stronger than you may expect. Google says the single-threaded performance of modern smartphone performance cores can match or beat the per-core performance of some modern multicore servers. In one comparison, a 2023 Pixel Fold was tested against an ASUS RS720A-E11 server using SPEC benchmarks. The Pixel Fold’s performance cores beat the baseline data center server core on many of the tests. That sounds impressive, but there is an important catch.
A smartphone board has a smaller memory limit and fewer cores. It also lacks the management tools and hardware durability that servers are built around. So the project needs the right workloads.
UC San Diego is starting with educational and research computing. That makes sense because many classroom tasks can run on small cloud instances. Google says early experiments showed that a 20-phone cluster could support peak submission rates for a class of more than 75 students. The grading latency also came in below the default AWS backend used in the comparison.
Why UC San Diego is testing a 2,000 Pixel phone data center
UC San Diego plans to use the 2,000-phone cluster to support computer science classes and research workloads. Google says the deployment could support about 100 classes at once. It also describes the system as providing about 50 server-equivalents worth of compute at a fraction of the usual cost.
For a university, that could be a major advantage. Cloud computing costs can rise quickly, especially when many students submit assignments at the same time. If a reused phone cluster can handle some of that load, schools may save money while reducing demand for newly manufactured servers.
This also gives researchers a chance to test phone-based computing at scale. A small lab demo can look promising. A 2,000-board deployment will show much more about reliability, maintenance and day-to-day performance.
Phone cluster computing still has big limits
Phone cluster computing sounds promising, but it still has a lot to prove. Your smartphone was made for daily use in your hand, not nonstop work inside a data center. Data center servers are built to run for years with steady cooling, fast repairs and constant monitoring. Phone motherboards come from devices made for pockets, backpacks and kitchen counters. That alone raises some big questions.
The boards could fail faster than expected. Cooling may also become a challenge once thousands of tiny processors run side by side. Then there is the labor problem, because someone has to safely remove batteries, screens and other parts before the boards can be reused. Cost will be the deciding factor. If teardown, maintenance and replacement work get too expensive, this idea may stay in the research lab.
Phone clusters also will not replace the massive GPU systems that power advanced AI training. They make more sense for smaller cloud jobs, classroom tools and research tasks that fit within smartphone hardware limits. That still leaves plenty of useful work. After all, not every cloud task needs the newest chip.
Why old smartphones could help cut e-waste
The world’s e-waste problem is growing fast. The Global E-waste Monitor projects that electronic waste could climb to 82 million tonnes by 2030, while formal collection and recycling rates are expected to fall to 20%. Old phones are a big part of that problem because many never make it to a proper recycling program. They sit in drawers, land in closets or get tossed out with valuable parts still inside. Even when a phone no longer feels useful to you, its processor, memory and storage may still have work left to do.
CyberGuy has covered related second-life ideas before, including old smartphones being turned into tiny data centers and repurposed EV batteries helping power AI data centers. The common theme is hard to ignore. Some of the hardware already in circulation may still have useful work left to do.
FIVE DATA BROKER OPT-OUT MYTHS THAT LEAVE RETIREES EXPOSED
Google says reusing smartphone motherboards could cut hardware waste and reduce the carbon cost of building new data center servers. (Yawar Nazir/Getty Images)
How to safely recycle or reuse your old phone
This research does not mean you should toss your old phone into a random donation bin tomorrow. Before you recycle, donate, trade in or sell an old phone, you need to protect your data. Back up anything you want to keep. Then sign out of your accounts and securely wipe the device.
CyberGuy has a helpful guide on how to securely get rid of your old cell phone. Privacy comes first whenever you part with a device.
You can also consider trade-in programs, certified refurbishers or reputable electronics recycling programs. If the phone still works, buying refurbished can also keep devices in use longer. CyberGuy has covered what to know before buying refurbished electronics, which is helpful if you want to save money without taking a gamble. The key is to avoid letting old devices sit forgotten forever. A phone in a drawer helps no one.
What this means to you
That old phone in your drawer may not be as useless as it looks. Even if the battery is tired or the camera feels outdated, the processor inside may still have real value.
Now, you probably will not be mailing your old phone to a Google data center anytime soon. Still, this project points to a bigger shift in how we think about retired tech. Instead of sending every old device straight to recycling or letting it collect dust, companies, schools and researchers may find smarter ways to reuse the parts that still work.
There is also a money lesson here. If your current phone still runs well, you may not need to rush into an upgrade just because a newer model comes out. A battery replacement, trade-in or refurbished option could save you money while keeping perfectly good hardware in use longer. To me, that is the real takeaway. The phone you forgot about could possibly still have a job to do.
Watch the CyberGuy Live replay: Lock Down Your Phone in 30 Minutes
Your phone holds your email, passwords, photos, banking apps and personal data. In this free CyberGuy Live replay, Kurt the CyberGuy walks you step by step through simple phone security fixes you can do at your own pace. You’ll learn how to improve your privacy settings, spot the latest phone scams, use trusted security tools and walk away with a simple checklist to stay protected. Watch the replay and get our checklist here: CyberGuyLive.com.
Kurt’s key takeaways
Google and UC San Diego are testing how to turn retired Pixel phone motherboards into a low-carbon cloud computing platform. The project could give old smartphones a second life while reducing the need for newly manufactured servers. That is important as AI data centers keep demanding more computing power and more electricity. The first major test is expected in fall 2026 with a 2,000-phone data center at UC San Diego. If it works, the cluster could support students and researchers at a lower cost than traditional cloud infrastructure. However, this idea still has to prove it can handle the grind of daily use. Reliability, cooling, teardown labor and maintenance will determine whether phone cluster computing can grow beyond just research. To me, the most relatable part is sitting in your junk drawer. That old phone may seem useless, but its processor could still be powerful enough to help run cloud jobs. Maybe the future of computing starts with hardware we already forgot we owned.
Would you feel good knowing your old phone could help power cloud computing? Let us know by writing to us at CyberGuy.com.
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